mOBiTh

Re: What is this??? (Federal AM-864)
« Reply #20 on: July 15, 2009, 07:39:56 PM »

Note how it explains in detail everything from how to set it up, to how to destroy it so the enemy does not get their hands on it. O

Quote
g. Destroy Destroy everything

Hahaha!
a tree is just a rain capacitor...


skal1

Re: What is this??? (Federal AM-864)
« Reply #21 on: July 16, 2009, 11:34:31 AM »


In listening, be sure to do a full polarity swap on the unit for comparison, since the side chain detection is just a single side of the PP total.

Good point, don't know how I missed that, but I'll try it.

What s meant by the full polarity swap ?


skLa1

drpat

Re: What is this??? (Federal AM-864) New
« Reply #22 on: July 16, 2009, 04:23:33 PM »
...
« Last Edit: September 18, 2010, 07:22:41 AM by drpat »
I use the LA2a on very hot signals like lead vocal.

skal1

Re: What is this??? (Federal AM-864)
« Reply #23 on: July 16, 2009, 07:48:44 PM »
hey thanks again drpat .

i was just wonder about the threshold and limiter pots, have you experience  any oscillation when both pots are turn to the max ?

skal1

drpat

Re: What is this??? (Federal AM-864) New
« Reply #24 on: July 16, 2009, 08:21:32 PM »
...
« Last Edit: September 18, 2010, 07:22:59 AM by drpat »
I use the LA2a on very hot signals like lead vocal.

skal1

Re: What is this??? (Federal AM-864)
« Reply #25 on: July 16, 2009, 09:16:51 PM »
This thing is hurting my head  drapt ,would it be possible to take some voltage reading off your unit , i do not know where you you measure from ,but i thing you have more knowledge than i  on this.

do you know what would cause this effect ?


thanks

skal1

pucho812

Re: What is this??? (Federal AM-864)
« Reply #26 on: July 16, 2009, 09:55:49 PM »
hey Pat, You should drop an e-mail to walter sear at sear sound, He modded his units. IIRC he added attack and release times.  He is quite the friendly fellow and I am sure he would offer some suggestions.
You tell me whar a man gits his corn pone, en I'll tell you what his 'pinions is.

drpat

Re: What is this??? (Federal AM-864) New
« Reply #27 on: July 17, 2009, 01:39:09 AM »
...
« Last Edit: September 18, 2010, 07:23:31 AM by drpat »
I use the LA2a on very hot signals like lead vocal.

skal1

Re: What is this??? (Federal AM-864)
« Reply #28 on: July 17, 2009, 07:25:48 AM »
now i am going man  >:(  i have check the voltages and have found that their is 200 volts at pin 8 of v1 and v2 , the manual say that it should be around 155volts .


what would  cause this 50v difference The heater voltage  is not that bad it   is 7.01volts  , i should be able to use a rsistor to drop that .7volts .


skal1

drpat

Re: What is this??? (Federal AM-864) New
« Reply #29 on: July 17, 2009, 08:19:04 PM »
...
« Last Edit: September 18, 2010, 07:23:42 AM by drpat »
I use the LA2a on very hot signals like lead vocal.


CJ

Re: What is this??? (Federal AM-864)
« Reply #30 on: July 17, 2009, 11:18:15 PM »
dude, whats that tent city like?
are there cattle roaming the streets?

If I can't fix it, I can fix it so nobody else can!
Frank's Tube Page: www.mif.pg.gda.pl/homepages/frank/vs.html
Guitar Amps: http://bmamps.com/Tech_sch.html

skal1

Re: What is this??? (Federal AM-864)
« Reply #31 on: July 18, 2009, 10:28:37 AM »
hey drapt plate resistors 12k



dude, whats that tent city like?
are there cattle roaming the streets?



cj what are you talking about ?

skal1

drpat

Re: What is this??? (Federal AM-864) New
« Reply #32 on: July 18, 2009, 06:20:16 PM »
...
« Last Edit: September 18, 2010, 07:24:13 AM by drpat »
I use the LA2a on very hot signals like lead vocal.

drpat

Re: What is this??? (Federal AM-864)
« Reply #33 on: July 18, 2009, 06:23:10 PM »
CJ,

The only people not living in tents around here are the legislature who just rewarded their inability to pass a budget with a 20% pay raise! And yes, this place has turned into a meat market.
I use the LA2a on very hot signals like lead vocal.

skal1

Re: What is this??? (Federal AM-864)
« Reply #34 on: July 19, 2009, 08:56:44 AM »
 ??? changed the plate resistors for 24k seems a little better , but still getting oscillation.what can cause this.

i also checked the output tx ct connection to ground i read a voltage of 1.20volts is this right , i thought should not see any dc through the secondary of the tx.


skal1

drpat

Re: What is this??? (Federal AM-864) New
« Reply #35 on: July 19, 2009, 05:57:06 PM »
...
« Last Edit: September 18, 2010, 07:25:37 AM by drpat »
I use the LA2a on very hot signals like lead vocal.

skal1

Re: What is this??? (Federal AM-864)
« Reply #36 on: July 19, 2009, 07:54:14 PM »
drapt i did change the caps in filter section , 22uf for two 12uf and 10uf for the 12uf that should be ok yes {IMP) it has not changed the hum factor.

yes this looks like an original


C2, C3 and C5 look new  markings on caps 104k


i changed the c6  for 0.01 600vac  Polypropolene Capacitors with Metal Foil ,is this ok ?

i have checked all resistors by lifting one leg from circuit and value are within  5%


skal1

drpat

Re: What is this??? (Federal AM-864) New
« Reply #37 on: July 19, 2009, 11:29:56 PM »
...
« Last Edit: September 18, 2010, 07:26:13 AM by drpat »
I use the LA2a on very hot signals like lead vocal.

skal1

Re: What is this??? (Federal AM-864)
« Reply #38 on: July 20, 2009, 12:22:13 PM »
Ok did what you suggested ,here we go


V4
pin 4 to ground ,1.4 meg 

pin 8 to R11 , 1.4 meg 


V1

pin 4 to ground ,2.67 meg 
pin 7 to C2 ,27.4 meg 
pin 8 to R2 ,12K

V2

pin 4 to ground ,2.67 meg 
pin 7 to R1 ,1.4 meg 
pin 8 to C5 ,0 OHM



skal1

 

drpat

Re: What is this??? (Federal AM-864) New
« Reply #39 on: July 20, 2009, 06:54:40 PM »
...
« Last Edit: September 18, 2010, 07:26:46 AM by drpat »
I use the LA2a on very hot signals like lead vocal.


 

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